Machine for upsetting tikes



UNITED STATES PATENT OFFICE.

C. L. CROWELL AND ROBERT'SMITH, OF PEORIA, vILLINOIS.

MACHINE FOR UPSETTING TIRES.

Specification of Letters Patent No. 24,009', dated May 17, 1859.

To all whom it may concern:

Be it known that we, O. L. ORowELL and R. SMITH, of the town and county of Peoria, State of Illinois, have invented certain new and useful Improvements in Machines for Upsetting Iron and other Metals, of which the following is a full, clear, and exact description, reference being` had to the accompanying drawing, forming part of this specification, in which- Figure l represents a plan for a machine for upsetting metal embracing our improvements. Fig. 2 represents a sectional elevation of the same on the line m m of Fig. l, and Fig. 3 represents an endlelevation.

Our improvements in machines for upsetting iron, or other metals, relate to that class in which the met-al bar to be upset is held or grasped firmly, on either side of the point, at which it is to be upset, by two clamps, and by the movement of these clamps toward each other, the bar, after being heated, is pressed between the holding points, and thus upset.

Those machines heretofore constructed are unwieldy and cumbersome, and not available as a hand machine, as from the arrangement and the application of the power to the movable aws, the necessary range of motion cannot well be given to the jaws, and SufB- cient power applied by hand to compress the metal, as so much of the power is consumed by the friction of the parts, and also by its indirect action on the movable jaws.

To overcome this defect and produce an available hand tool, is the object of our improvement.

By reference to the accompanying drawing, our improvements in machines for upsetting iron by compression, will be fully understood by those versed in the art.

This machine consists of a cast iron bed or frame (A) with lugs (f) at the sides and l one end, by which it may be firmly bolted down. At one end of the frame is a fixed clamp (B) and at the opposite end a mov- These clamps are provided with a projecting lip (el) which forms the abutment for a serrated steel face plate (c) and the bottom of the plate is furnished with a shank (72,) which entering a groove a groove (g) in the bed of the jaws prevents it from moving laterally. On each clamp opposite the face plate is pivoted a serrated cam shapedjaw (F) and these are so arranged in relation to each other, as to bind a rod placed in the clamps when they move, toward each other, and with a force proportioned to the force exerted to bring the clamps together, and also to unclamp or loosen the i'od when the clamps move in the opposite direct-ion.

The face plate may be wedged forward in its groove, to adjust the distance between it and the cam shaped jaw, for bars varying in size.

Two guides (H) formed by an extension of the sides of the bed, support the movable jaw (C) the shank (L) which passes between these guides, and is held on the under side by overlapping lips (K). A punch bar (D) is attached at one end to the shank of the movable jaw, and passes through an opening in the frame made to receive it, and carries at its outer end a small punch (a). An abutment (I) at the end of the frame is fitted with a movable steel die (c) for the punch. The top of the frame between the jaws forms a rest for the support of the metal while being compressed, and a cavity is made in the frame to receive a spiral spring (b) for throwing out the movable jaws. The mechanism by which the movable clamp is carried toward the fixed clamp consists of a lever pivoted at the end and between the two guides, the inner end of the lever is rounded nearly con'centrically with y its center of motion, and provided' with a short projectinglip or arm (m) with a curved recess (n) at its base; between the lever and the shank of the movable jaws, is a slide (G) of peculiar construction, somewhat in the form of a wedge with concave sides, and rounded point. wedge is straight and bears against the shank of the movable jaw, the lower concave side is made to t the rounded end of the lever, and the rounded point of the wedge enters the recess in the base of the lip.

In raising the lever the short arm or lip acts directly on the point of the wedgeshaped slide. The movement of the lever causes the lip to describe a curved path around the fixed center of the lever which, as the machine is arranged is a forward and a downward movement at right angles to each other, and this same movement is given by the lip to the slide, the former one of which carries the movable jaws forward and the latter places the slide in such posi- The base of thev ico tion that the power of the lever is transmitted to the slide parallel to its line of motion.

It will be seen from the construction and arrangement of the wedge-shaped slide, it forms an intermediate sliding connection between the lever and the movable clamp and that through it the power of the lever is applied to the movable clamp parallel to its line of motion withoutsubjecting it to cross strains, as in the other modes heretofore used. Not only by means of this intermediate slide is the power applied more directly to the movable jaw, but a greater range of movement is obtained in the application of the lever, than in any other arrangement within our knowledge, as by this arrangement the lever exerts its useful and full effect as a mechanical power in describing a quarter of a circle. We do not confine ourselves to the precise form of this intermediate slide or link, to change the direction of the application of the power of the lever as it may be varied as circumstances require,

provided it is not connected with the lever or with the mechanism moved by the lever. Neither do we confine ourselves to the application of this combined lever and disconnected slide to operate the jaws of a machine for upsetting metals as it may be used for- C. L. CROWELL. ROBERT SMITH.

Witnesses Trios. S. LUP'roN, D. D. IvvUs. 

